Improvement in rotary pumps



2Sheets--Sheet l. w. H. BEAL. Rotary Pumps- Patented Aug- 1874' 4 K. W, W

Attorneys 2 Sheets--Sheet 2- -w; H. SEAL.

Rotary Pumps.

N0.l54,003f PatentedAug.fl,l874;

THE GRAPH": CO. PHOTB'LlTH.398- +l PARK FLAGS, PLY- .,,.UNITED STATES PATENT OFFICE.

WIL IAM BEAL, o JAo son, TENNESSEE.

' IMPROVEMENT IN ROTARY PUMPS.

Specification forming part of Letters Patent No. 154,003, dated August 11,1874; application filed June 25, 1874.

To all whom it may concern Be it known that I, WILLIAM HENRY BEAL, of Jackson, in the county of Madison and in the State of Tennessee, have invented certain new and useful Improvements in R0- tary Pumps; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

tight partition within the cylinder, and being madev to revolve and stand still-alternately, in such a manner that while one is stationary it forms an air-tight partition betweenthe inlet and outlet, and the other at the same time revolves and carries out the water before it, and forms a vacuum behind, thus producing force and suction.

In order to enable others skilled inthe art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawings, in which- Figure l is a transverse vertical section of my pump. Fig. 2 is a longitudinal vertical section of the same. Fig. 3 is a longitudinal section of a part of one of the pistons and Fig. 4 is an end view of the same.

A represents a cylinder, of any suitable dimensions, provided with inlet B and outlet 0, arranged substantially as shown in Fig. 1. B is the inlet'chamber, and O the outlet-chamber, communicating with the cylinder A by the ports B and O,a-nd provided, respectively, with valves B and O Through the center of the cylinder A passes a stud-shaft, D, which reaches the middle of the cylinderat full size,

but is continued from there to the other end at a size sufficiently small to allow a second shape, as shown, and extending the entire width, from end to end, of the cylinder. In the outer faceof each piston E is a longitudinal groove, a, in which is inserted a rib or flange, b, formed in the center on the inner side of a curved cap, G, said cap covering the entire outer end of the piston. In the bottom of the groove a are suitable recesses, a, in which springs 61 are inserted to hold the cap out against the inner surface of the cylinder. At one end of each piston is a radial slot for the insertion of a bar, f, which also passes through a slot in thecap G and rib or flange b, and is forced outward by means of a spring, 0, placed behind the bar. The gearing by which the pistons are operated consists of two small cog wheels, H H, attached one to each shaft outside the cylindenand two large cogwheels, J J, attached to a thirdshaft, I, situated outside the cylinder. The large wheels J are provided, haf-way round, with cogs, in number sufficient to cause a complete revolution of the smaller wheels H H, the balance of their circumference being a smooth, plain surface. The small cog-wheels H H are provided with a recess or blank space, so that when the plain surface of the large wheel enters the recess the small wheel is stationary, and just before the toothed part of the large wheel comes around, a hook, h, therein takes hold of a pin, i, on the side of the small wheel, so as to turn the same sufficient to allow the wheels to gear and cause a complete revolution of the small wheel. wheels have their plain surfaces arranged opposite to each other, so that while one small wheel is being turned the other is stationary.

By these means the pistons are made to revolve and stand still, alternately, in such a manner that while one is stationary it forms an air-tight partition between the inlet and the outlet, and the other at the same time revolves and carries out the water before it, and forms a vacuum behind, thus producing force and suction.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-- Y 1. The V-shaped piston E, grooved as de- The two large scribed, and provided with the cap Gr, having rib b, the bar f, and springs d and'e, all constructed substantially as set forth.

2. The combinationywith the shafts D D and pistons E E, of the cog-wheels H H and J J, constructed and operating substantially as and for the purposes herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 6th day of J une 1874:.

W. H. BEAL.

Witnesses:

L. T. LINDSEY, GHAS.H. BROWN. 

